Objetivo. Determinar el perfil de ácidos grasos (AG), ácido linoleico conjugado (ALC) e isómeros en leche vaca producida condiciones orgánicas sureste México. Materiales y métodos. Durante un año se colectaron 48 muestras leche, proveniente tres unidades producción (UP 1, 2 3) tanque colector (TC) del municipio Tecpatán, Chiapas (12 meses x 4 = 48), siguiendo las pautas establecidas normativida...

Let G be a graph embedded in a surface and let F be a set of even faces of G (faces bounded by a cycle of even length). The resonance graph of G with respect to F, denoted by R(G;F), is a graph such that its vertex set is the set of all perfect matchings of G and two vertices M1 and M2 are adjacent to each other if and only if the symmetric difference M1 ⊕M2 is a cycle bounding some face in F. ...

Resum En aquest article es presenta l’evolució que ha sofert recentment l’educació a distància des d’una nova perspectiva, la ciència del web, que estudia com el web ha evolucionat tecnològicament, però també socialment i organitzativament. El web, una solució tecnològica inicialment pensada per a compartir informació, és avui dia present en totes les activitats quotidianes, en qualsevol àmbit ...

REFERENCES Bagnstoss, A. H, and Rosenberg, E. F. (1941). Arch. intern. Med., 67. 241. Bauer, W., and Clark, W. S. (1948). Trans. Ass. Amer. Phycns, 61, 339. Bennett, G. A. (1943). Ann. Intern. Med., 19, lIt. Bywaters, E. G. L. (1950). Brit. Heart J., 12, 101. Clar, W. S., Kulka, J. P., and Bauer, W. (1957). Amer. J. Med., 22, 580. Dubois, E. L. (1953). Ann. intern. Med., 38, 1265. Fingerman, D....

In this talk I discuss two relations between normative reasoning and formal argumentation. First I consider formal argumentation as a kind of normative reasoning. An attack of argument A on argument B is interpreted either as “either A is not accepted or B should be accepted” or as “A and B cannot both be accepted, and it is preferred to accept A over B”. The difference between the two interpre...

The processing performed by a feed-forward neural network is oft en int erpreted through use of decision hyperplanes at each layer. T he adaptation process, however, is normally explained using the picture of gradient descent of an error land scape. In thi s paper t he dynamics of t he decision hyperplanes is used as t he model of the adaptat ion process. An electro-mechanical analogy is drawn ...

Clar, Christine, Keith L. Dorrington, and Peter A. Robbins. Ventilatory effects of 8 h of isocapnic hypoxia with and without b-blockade in humans. J. Appl. Physiol. 86(6): 1897–1904, 1999.—This study investigated whether changing sympathetic activity, acting via b-receptors, might induce the progressive ventilatory changes observed in response to prolonged hypoxia. The responses of 10 human sub...

Transplant tolerance is an important issue in the clinical practice. Successful transplant depends on the ability to block the rejection of the transplanted organ. Currently, improving transplant tolerance is accomplished using immunosuppressive agents, but having also many toxic effects on the host body. So far, the conventional immunosuppressive therapy with calcineurin inhibitors such as cyc...

The core issue of artificial intelligence is thinking simulation. We use the electrocardiogram (ECG) as an example. Here, Abstract and logical thinking work alongside with imagery thinking and experience analysis, and the physicians diagnosis has both macro precepts together with micro particulars. Meanwhile, a few problems restrict clinical acceptance of the many theoretical ECG analysis metho...

In this work, two different classes of polyaromatic hydrocarbon (PAH) systems have been investigated in order to characterize the amount of polyradical character and to localize the specific regions of chemical reactivity: (a) the non-Kekulé triangular structures phenalenyl, triangulene and a π-extended triangulene system with high-spin ground state and (b) PAHs based on zethrenes, p-quinodimet...